Well, If you work out what direction the wind is going, stand with your back to it you can work out which side of you the high and low pressure is. Back to the wind and the low pressure is on the left.
The direction you are facing is the one that any weather fronts will be traveling (in theory)..the speed of the wind can help you tell how big the differences in pressure are. and general weather conditions can help you tell when you are in an area of high or low..
oh and teh sorts of clouds can help indicate if you are under a front and if you see it aproaching/leaving you can tell which sort
not that complicated lol..I am now going to test it